Is it true, as is commonly believed, that Mount Sinai, the Mount of Transfiguration, and the Sacred Valley of Tuwa are located in Egypt, or are they in Saudi Arabia, Jordan, or Sudan?

Firstly: The noble verse (And when Moses came to Our appointed time and his Lord spoke to him, he said, "My Lord, show me, that I may look at You." He said, "You will not see Me, but look at the mountain; if it remains in its place, then you will see Me." But when his Lord manifested Himself to the mountain, He made it crumble to dust, and Moses fell unconscious. And when he recovered, he said, "Exalted are You! I repent to You, and I am the first of the believers.") Al-A'raf/143, indicates that Moses (peace be upon him) requested to see Allah Almighty, and Allah informed him that he would not see Him in this world. And when Allah manifested Himself to the mountain, He made it crumble to dust, and Moses fell unconscious. When he recovered, he declared his repentance and faith.

Secondly: The verses (And We called him from the right side of the Mount [Sinai] and brought him near in secret converse.) Maryam/52, and (And when Moses had completed the term and was traveling with his family, he perceived from the direction of the Mount a fire...) Al-Qasas/29, and (And you were not on the side of the Mount when We called out...) Al-Qasas/46, indicate that Allah Almighty called Moses (peace be upon him) at Mount Tur in Sinai, which is the well-known mountain that was historically part of Palestine and is currently part of Egypt. Moses (peace be upon him) was returning to Egypt from Midian. None of the scholars mentioned that it was in Sudan.